Proof of concept exploit that demonstrates the Microsoft Windows XP WmiTraceMessageVa integer truncation vulnerability as described in MS11-011.
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Zero Day Initiative Advisory 11-064 - This vulnerability allows local attackers to execute arbitrary code from the context of kernelspace on vulnerable installations of Microsoft Windows. The ability to make a system call is required in order to exploit this vulnerability. The specific flaw exists within the kernel's support for Trace Events. Due to a bad type conversion, the kernel will use a truncated length for allocating data from userspace. When populating this buffer the kernel will use a differing length causing a buffer overflow. This will cause memory corruption and can lead to code execution under the context of the kernel.
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